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Question

What is the volume of 20 volume H2O2 required to get 5000cm3 of oxygen at STP ?

A
250cm3
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B
20cm3
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C
100cm3
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D
125cm3
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Solution

The correct option is D 250cm3

20 volume of H2O2 = 1mL of H2O2 gives 20 mL of oxygen on decomposition.

∴ For 5000cm3 of O2 required = 500020 = 250cm3


Hence,option A is correct.


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